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Webcams have been used for augmented reality experiences online.

One such function has the webcam act as a "magic mirror" to allow an online shopper to view a virtual item on themselves.

For a more complete list see Comparison of webcam software.

Special software can use the video stream from a webcam to assist or enhance a user's control of applications and games.

Video features, including faces, shapes, models and colors can be observed and tracked to produce a corresponding form of control.

Mostly, these are manual-focus cameras and contain an old CCD array instead of comparatively newer CMOS array.

When sent to a remote location, the video stream may be saved, viewed or on sent there.

Unlike an IP camera (which connects using Ethernet or Wi-Fi), a webcam is generally connected by a USB cable, or similar cable, or built into computer hardware, such as laptops.

Webcam features and performance can vary by program, computer operating system, and also by the computer's processor capabilities.

Video calling support has also been added to several popular instant messaging programs. Software is available to allow PC-connected cameras to watch for movement and sound, a computer e-mailed images of the burglar during the theft of the computer, enabling the owner to give police a clear picture of the burglar's face even after the computer had been stolen.